Electrosynthesis and catalytic properties of magnesium oxide nanocrystals with porous structures

Yuan, Gaoqing; Zheng, Junhua; Lin, Chun-Chu; Chang, Xiaoying; Jiang, Huanfeng

doi:10.1016/j.matchemphys.2011.06.058

Cited by 25 publications

(7 citation statements)

References 31 publications

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“…Nanostructured MgO has been synthesized by various physicochemical techniques, such as sol-gel calcination, chemical precipitation, and hydrothermal and microwave fabrication [19][20][21][22][23][24][25][26][27][28]. In this research, we successfully synthesized MgO nanoplates by sol-gel calcination and hydrothermal calcination methods.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Magnesium Oxide Nanoplates and Their Application in Nitrogen Dioxide and Sulfur Dioxide Adsorption

Duong

Nguyen

Oanh

et al. 2019

Journal of Chemistry

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In this research, nanostructured magnesium oxide was synthesized through the sol-gel calcination or hydrothermal calcination method using various surfactants. The X-ray diffraction pattern of the materials confirmed that all the prepared magnesium oxide samples were single phase without any impurity. The scanning electron microscopy images and specific surface area values showed that sodium dodecyl sulfate was the most suitable surfactant for the synthesis of magnesium oxide nanoplates with the diameter of 40–60 nm, the average thickness of 5 nm, and a specific surface area of 126 m2/g. This material was utilized for nitrogen dioxide and sulfur dioxide adsorption under ambient condition. The saturated adsorption capacities of magnesium oxide were 174 mg/g for nitrogen dioxide and 160 mg/g for sulfur dioxide, making the magnesium oxide nanoplates a promising candidate for toxic gas treatment.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Magnesium Oxide Nanoplates and Their Application in Nitrogen Dioxide and Sulfur Dioxide Adsorption

Duong

Nguyen

Oanh

et al. 2019

Journal of Chemistry

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“…Magnesium oxide (MgO) is a versatile metal oxide having numerous applications in many fields. It has been used as a catalyst and catalyst support for various organic reactions [ 1 , 2 ], as an adsorbent for removing dyes and heavy metals from wastewater [ 3 , 4 ], as an antimicrobial material [ 5 ], as an electrochemical biosensor [ 6 ] and many other applications. Conventionally, MgO is obtained via thermal decomposition of various magnesium salts [ 7 - 9 ].…”

Section: Introductionmentioning

confidence: 99%

Growth mechanisms of MgO nanocrystals via a sol-gel synthesis using different complexing agents

et al. 2014

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In the preparation of nanostructured materials, it is important to optimize synthesis parameters in order to obtain the desired material. This work investigates the role of complexing agents, oxalic acid and tartaric acid, in the production of MgO nanocrystals. Results from simultaneous thermogravimetric analysis (STA) show that the two different synthesis routes yield precursors with different thermal profiles. It is found that the thermal profiles of the precursors can reveal the effects of crystal growth during thermal annealing. X-ray diffraction confirms that the final products are pure, single phase and of cubic shape. It is also found that complexing agents can affect the rate of crystal growth. The structures of the oxalic acid and tartaric acid as well as the complexation sites play very important roles in the formation of the nanocrystals. The complexing agents influence the rate of growth which affects the final crystallite size of the materials. Surprisingly, it is also found that oxalic acid and tartaric acid act as surfactants inhibiting crystal growth even at a high temperature of 950°C and a long annealing time of 36 h. The crystallite formation routes are proposed to be via linear and branched polymer networks due to the different structures of the complexing agents.

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“…MgO is a versatile metal oxide having numerous applications in many fields. It has been used as a catalyst and a catalyst support for various organic reactions, 25,26 as an adsorbent for removing dyes and heavy metals from wastewater, 27,28 as an antimicrobial material, 29 as an electrochemical biosensor 30 and in many other applications. Mageshwari et al investigated the photocatalytic activity of MgO nanoparticles synthesized by template-free reflux condensation approach.…”

Section: Introductionmentioning

confidence: 99%

Development of N-doped bamboo-shaped carbon nanotube/magnesium oxide nanocomposites

Vanyorek

Prekob

Sikora

et al. 2019

Journal of Composite Materials

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Nitrogen-doped bamboo-shaped carbon nanotubes/magnesium oxide composites were prepared using a simple impregnation method. Magnesium oxide nanoparticles with different crystal morphologies were obtained using magnesium oxide powder and stearic acid precursors. The calcination of bamboo-shaped carbon nanotubes/magnesium stearate mixture in a 1:1 ratio with different temperatures (300 and 400℃) in an inert atmosphere was carried out. The prepared composites were further analyzed by X-ray powder diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, specific surface area measurement, Fourier transform infrared spectroscopy, transmission and scanning electron microscopy and thermogravimetric analysis techniques. Results revealed that the characteristic morphology and the crystal structure of the composites rely primarily on the heat treatment temperature chosen. To obtain a proper crystalline magnesium oxide, at least 400℃ is required. As-prepared bamboo-shaped carbon nanotube-based composites would be an ideal candidate as a catalyst or a membrane additive material for water purification technology.

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Electrosynthesis and catalytic properties of magnesium oxide nanocrystals with porous structures

Cited by 25 publications

References 31 publications

Synthesis of Magnesium Oxide Nanoplates and Their Application in Nitrogen Dioxide and Sulfur Dioxide Adsorption

Synthesis of Magnesium Oxide Nanoplates and Their Application in Nitrogen Dioxide and Sulfur Dioxide Adsorption

Growth mechanisms of MgO nanocrystals via a sol-gel synthesis using different complexing agents

Development of N-doped bamboo-shaped carbon nanotube/magnesium oxide nanocomposites

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